TOON to JSON Converter
Convert TOON back to JSON online — paste Token-Oriented Object Notation and recover formatted JSON instantly. Free and browser-based.
Switch between JSON to TOON or TOON to JSON conversion
Tab delimiter often saves more tokens
JSON TOKENS
0
TOON TOKENS
0
SAVED
0%
TOON (Token-Oriented Object Notation) is a compact, human-readable format designed for LLM prompts. It achieves 30-60% token savings compared to JSON while maintaining structure and readability.
- Token Efficient: Removes redundant punctuation and declares array structures once
- LLM-Friendly: Explicit lengths and fields enable better validation
- Tabular Arrays: Perfect for uniform data structures like user lists or analytics
- Indentation-Based: YAML-like structure with minimal syntax
About TOON to JSON Converter
Already have TOON-encoded data from an LLM workflow? Paste it here to decode it back into clean, pretty-printed JSON. The conversion is lossless and runs entirely in your browser.
TOON to JSON is the inverse of the token-saving encoding: it expands the compact notation back into standard JSON you can validate, store, or feed to any API that expects JSON.
How to use TOON to JSON Converter
Paste your TOON
Paste TOON into the input editor (an example is preloaded).
Get JSON
The pretty-printed JSON output appears automatically.
Copy or download
Copy the JSON or download it as a .json file.
Frequently asked questions
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